| 摘要 |
A method for generating a parity-check matrix is provided to increase the encoding/decoding efficiency using an LDPC(Low Density Parity Check) code by controlling the cycle number such as cycle-4 and cycle-6. To generate a parity-check matrix having an excellent cycle characteristic, one or more rows of a basis parity-check matrix are divided by one or more division patterns(S81). The division patterns mean patterns which explain a concrete method of dividing a specific row of the basis parity-check matrix. One or more parity-check matrices are generated by dividing the rows of the basis parity-check matrix by the division patterns. The cycle characteristic of each parity-check matrix is checked(S82). Finally, one parity-check matrix is selected according to the checking results(S83). |
